What is the appropriate response if the engine does not start during a ground fire checklist?

In the context of handling an engine that does not start during a ground fire checklist, the correct response involves applying throttle fully, setting the mixture to "Idle Cut-Off" (ICO), and continuing to crank the engine. This approach is significant because it serves multiple purposes in the event of a potential ground fire.

Maintaining a full throttle setting helps to clear any excess fuel that might have accumulated and could contribute to a fire hazard. Setting the mixture to ICO means that the fuel supply is cut off, which is critical in reducing the risk of fire as you attempt to start the engine. Cranking the engine while in this configuration can help clear any potential flooding and also allows for an attempt to get the engine running, without adding more fuel into the combustion chamber. This method aims to ensure safety and manage risks effectively in a volatile situation.

The other choices do not align with the typical protocol for handling a non-starting engine in a ground fire scenario, as they either recommend immediate evacuation or calling for assistance before taking necessary preemptive actions to ensure Safe operation of the aircraft.